Michael Joseph "Mike" Farrell is an actor, best known for his role as Captain B.J. Hunnicutt (shown above) on the CBS-TV series M*A*S*H (1975–83). He Stayed with the series for its remaining eight years on the air. During that time, Farrell wrote five episodes and directed four. Even before he was well-known, Farrell was an activist for many political and social causes.